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Demonstrates a crossover from inverse to conventional Bauschinger effect in amorphous solids, suggesting new insights into their mechanical behavior.
The stress response of a previously sheared amorphous material retains a memory of its prior deformation. This Bauschinger effect manifests as a softening upon shear reversal. Understanding such memory effects provides insights into amorphous rheology. This study reveals that amorphous materials display a previously unrecognized crossover from an inverse to the conventional Bauschinger effect, governed by glass stability, strain history, and shear rate. The resulting phase diagram points to a richer, partially reversible memory landscape. Microscopically, this crossover is rooted in the healing of shear-band networks, establishing local plastic healing as a generic mechanism for memory reversal in disordered solids.
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Priya et al. (2026) studied this question.
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